期刊
PHYSICA SCRIPTA
卷 82, 期 6, 页码 -出版社
IOP Publishing Ltd
DOI: 10.1088/0031-8949/82/06/065403
关键词
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资金
- China Postdoctoral Science Foundation [20080440896]
- State Key Laboratory of Information Security (Graduate School of Chinese Academy of Sciences)
- Key Laboratory of Communications and Information System (Beijing Jiaotong University)
Security and anonymity are essential to E-payment systems. However, existing E-payment systems will easily be broken into soon with the emergence of quantum computers. In this paper, we propose an E-payment system based on quantum group signature. In contrast to classical E-payment systems, our quantum E-payment system can protect not only the users' anonymity but also the inner structure of customer groups. Because of adopting the two techniques of quantum key distribution, a one-time pad and quantum group signature, unconditional security of our E-payment system is guaranteed.
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